Orthodontic bracket base



FIG. 1 is a top, front, right perspective view of an orthodontic bracketbase showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a right side elevational view thereof, the left side being amirror image; and,

FIG. 4 is a front elevational view thereof.

The orthodontic bracket base which is partially shown is repeatedthroughout the base area.

The broken line drawing of an orthodontic bracket is for illustrativepurposes only and forms no part of the claimed design.

The ornamental design for an orthodontic bracket base, as shown and described. 